- Ambient Air Quality Status of Nitrogen Dioxide (NO2) Levels (Annual Average) At Selected Cities and Locations under National Air Quality Monitoring Programme (NAMP) in Chennai District of Tamil Nadu (2017)
- Ambient Air Quality Status of PM2.5 (Particulate Matter Less than 2.5 Micron) Levels (Annual Average) At Selected Cities and Locations under National Air Quality Monitoring Programme (NAMP) in Chennai District of Tamil Nadu (2017)
- Ambient Air Quality Status of Sulphur Dioxide (SO2) Levels (Annual Average) At Selected Cities and Locations under National Air Quality Monitoring Programme (NAMP) in Chennai District of Tamil Nadu (2017)